samira-t/akka — comment on commit 1fc202eb1efa9deb6c39741966c52e2309e5def9
File: akka-setack/src/main/scala/akka/setack/core/dispatcher/TestDispatcher.scala line 21
By viktorklang:

Creating your own dispatchers is a core feature of Akka.

Intercepting the mailboxes is needed if you want to make sure that both the system messages and user messages are empty